CN104914637A - Liquid crystal panel - Google Patents

Liquid crystal panel Download PDF

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Publication number
CN104914637A
CN104914637A CN201510329028.4A CN201510329028A CN104914637A CN 104914637 A CN104914637 A CN 104914637A CN 201510329028 A CN201510329028 A CN 201510329028A CN 104914637 A CN104914637 A CN 104914637A
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CN
China
Prior art keywords
mentioned
pixel
liquid crystal
distribution
crystal panel
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CN201510329028.4A
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CN104914637B (en
Inventor
川端雅江
下敷领文一
山下祐树
正乐明大
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Sharp Corp
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Sharp Corp
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136213—Storage capacitors associated with the pixel electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
    • G09G2300/0447—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G09G2300/0847—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor being a dynamic memory without any storage capacitor, i.e. with use of parasitic capacitances as storage elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0876—Supplementary capacities in pixels having special driving circuits and electrodes instead of being connected to common electrode or ground; Use of additional capacitively coupled compensation electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0204—Compensation of DC component across the pixels in flat panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

A liquid crystal panel (10) includes a plurality of pixels arranged in a matrix pattern having rows and columns. A plurality of Cs bus lines (43c) as storage capacitor lines are routed in the row direction of the liquid crystal panel (10). A plurality of branch lines (310) are routed in the column direction across a pixel region (10a). The branch lines (310) are connected to the Cs bus lines (43c) so that control signals are sent to storage capacitors from the branch lines (310) through the Cs bus lines (43c).

Description

Liquid crystal panel
The application is divisional application, and the application number of original bill application is 201080022017.7, and the applying date is on 05 10th, 2010, and invention and created name is " liquid crystal panel ".
Technical field
The present invention relates to the rectangular liquid crystal panel that multiple pixel is configured to have row and column.In addition, the application, based on No. 2009-123630, the Japanese patent application applied on May 21st, 2009, advocates based on Paris Convention or the right of priority of regulation entering state.The content of this basis application is enrolled in the application as reference.
Background technology
As this liquid crystal panel, the present inventor, in such as WO2006/098449 (International Publication No. 06/098449 pamphlet (patent documentation 1)) etc., proposes so-called many pixel drivers (also referred to as " area gray level display ", " driving of area gray level " or " display of many pixels " etc.) technology.
In this liquid crystal panel, multiple pixel is configured to have the rectangular of row and column.According to this technology, be provided with in 1 pixel and make 2 the secondary pixels different to the effective voltage of liquid crystal layer applying.Further, different auxiliary capacitors is respectively equipped with to this secondary pixel.Vibration voltage is given to this auxiliary capacitor.In this many pixel driver, make the reversal of poles of the voltage to auxiliary capacitor supply, thus light and shade is arranged to each secondary pixel.
In this case, the auxiliary capacitor of this secondary pixel is connected with the multiple auxiliary capacity wirings such as configured in the row direction (also referred to as " Cs bus " etc.).The dry distribution (also referred to as " Cs main line " etc.) that this auxiliary capacity wiring and both sides in the row direction configure is connected.Further, by dry distribution, auxiliary capacity wiring, auxiliary capacitor is transmitted control signal.
In addition, in this publication, describing the control signal of above-mentioned auxiliary capacitor because of resistance etc. and produce waveform circle, blunt (waveform circle is blunt: waveform rounding (rounding of waveforms)) (such as, WO2006/098449, paragraph 0120 ~ 0121).About the problem of the blunt generation of this waveform circle, in this publication, disclose the scheme improved by the vibration period of prolongation to the control signal that auxiliary capacity wiring is given.
prior art document
patent documentation
Patent documentation 1: International Publication No. 06/098449 pamphlet
Summary of the invention
the problem that invention will solve
But, in the purposes such as TV display, the large screen development of liquid crystal indicator.Along with the development of large screen, the wiring path to above-mentioned auxiliary capacitor is elongated.Therefore, be also easy to the blunt phenomenon of above-mentioned waveform circle occurs.In addition, according to the purposes of this TV display etc., surrounded by frame shape framework before panel.Even identical picture dimension, also can reduce the width of display further, therefore, require the width of constriction frame shape framework (requiring narrow frame).As 1 method reducing the blunt phenomenon of above-mentioned waveform circle, the dry distribution increasing and slightly arrange in the line direction both sides of liquid crystal panel can be enumerated, reduce the resistance of dry distribution.But the requirement increasing thick dry distribution and this narrow frame is runed counter to.In order to the requirement of the narrow frame of correspondence, when the dry distribution of constriction, the resistance to the wiring path of auxiliary capacitor uprises, and is easy to the blunt phenomenon of waveform circle occurs.Therefore, the present invention is directed to the distribution that the auxiliary capacitor of this liquid crystal indicator is transmitted control signal, propose the structure do not had up to now.
for the scheme of dealing with problems
In liquid crystal panel of the present invention, multiple pixel is configured to have the rectangular of row and column.Auxiliary capacitor is provided with in each pixel.In addition, in the row direction, be configured with multiple auxiliary capacity wiring, described multiple auxiliary capacity wiring is connected with each auxiliary capacitor be configured on this line direction.In addition, in the pixel region being configured with multiple pixel, be configured with multiple distributions in a column direction.Further, a distribution is connected with control signal supply unit, is transmitted control signal from a distribution by auxiliary capacity wiring to auxiliary capacitor.According to this liquid crystal panel, not necessarily dry distribution must be set in dual-side edge in the row direction, even if when arranging dry distribution, also can the dry distribution of constriction.The space saving (narrow frame) of the line direction dual-side edge of liquid crystal panel can be realized thus.In addition, can multiple distributions be set in pixel region.Therefore, the wiring path till each auxiliary capacitor can be shortened to, and the resistance of the wiring path to auxiliary capacitor can be suppressed for lower.Can improve thus " waveform circle is blunt " of the control signal of auxiliary capacitor.In addition, at this, basis is recited as to define " distribution " with this instructions.
In this case, liquid crystal panel can the multiple dry distribution that connects of at least one party's edge part configuration auxiliary capacity wiring in the row direction.In this case, be configured to: dry distribution is connected with control signal supply unit, by auxiliary capacity wiring, auxiliary capacitor transmitted control signal from dry distribution.In addition, liquid crystal panel can possess at the edge part of column direction the multiple horizontal dry distribution be connected with a distribution.
In addition, multiple distributions can be divided into multiple groups, are connected with control signal supply unit in the mode distribution belonging to identical group being sent to identical control signal.In this case, multiple auxiliary capacity wiring respectively with belong to 1 distribution organized and be connected.In addition, in this case, the multiple dry distribution of at least one party's edge part being configured in line direction can be possessed.Auxiliary capacity wiring is configured to: be connected with 1 dry distribution in above-mentioned multiple dry distribution, sends the control signal identical with propping up of organizing 1 that belongs to that this auxiliary capacity wiring the connects control signal that distribution sends by control signal supply unit to this dry distribution.And, also can possess the multiple horizontal dry distribution of the edge part being configured in column direction.In this case, the distribution belonging to 1 group is connected to 1 different horizontal dry distribution of propping up of organize from other the horizontal dry distribution that distribution connects.
In addition, in each pixel, a distribution can be also similarly configured with respectively.Such as, when there is RGB sub-pixel respectively in each pixel, can be configured a distribution by the mode of the R sub-pixel in RGB sub-pixel.In addition, can be configured a distribution by the mode of the G sub-pixel in RGB sub-pixel.In addition, can be configured a distribution by the mode of the B sub-pixel in RGB sub-pixel.
Liquid crystal panel can possess: liquid crystal layer; Clip a pair substrate of liquid crystal layer; The comparative electrode that side's substrate in a pair substrate is formed; And pixel electrode that is relative with comparative electrode, that formed on the opposing party's substrate.In this case, can be configured with 2 distributions in the mode in the region by being formed with pixel electrode, described 2 distributions are supplied to the direction pair of control signal that variable quantity is identical on the contrary mutually of signal voltage change.Offset by these 2 distributions in an impact of the electric capacity (capacitive couplings: capacitive coupling) formed between distribution and pixel electrode thus, can reduce in an impact that the electric capacity formed between distribution and pixel electrode brings.
In addition, when being configured with multiple distributions in the mode in the region of the pixel electrode by being formed with pixel, can make at an electric capacity (capacitive couplings) formed between distribution and pixel electrode equal.Thus when the direction pair of control signal that variable quantity is identical on the contrary mutually to the change of the plurality of distribution supply signal voltage, larger in an effect that the impact of the electric capacity (capacitive couplings) formed between distribution and pixel electrode is cancelled.In addition, in the maximal value of each the multiple electric capacity formed between distribution and pixel electrode can be less than 2 times of minimum value.Even if in this case, when the direction pair of control signal that variable quantity is identical on the contrary mutually to the change of the plurality of distribution supply signal voltage, be cancelled in an impact for the electric capacity (capacitive couplings) formed between distribution and pixel electrode, be reduced in an impact for the electric capacity (capacitive couplings) formed between distribution and pixel electrode.In addition, the maximal value of further preferred multiple electric capacity is less than 1.5 times of minimum value.
In addition, when being configured with multiple distributions in the mode in the region of the pixel electrode by being formed with pixel, each distribution can be made equal with the projected area of pixel electrode overlap.Such as, in the planimetric map of substrate being formed with pixel electrode, a distribution is equal in the plurality of distribution with the area of pixel electrode overlap.Thus when having supplied the direction pair of control signal that variable quantity is identical on the contrary mutually of signal voltage change to the plurality of distribution, larger in an effect that the impact of the electric capacity (capacitive couplings) formed between distribution and pixel electrode is cancelled.In addition, Ke Yishi: be configured with multiple distributions in the mode in the region of the pixel electrode by being formed with pixel, the maximal value of the projected area that each distribution is overlapping with pixel electrode is less than 2 times of minimum value.In this case, when having supplied the direction pair of control signal that variable quantity is identical on the contrary mutually of signal voltage change to the plurality of distribution, be cancelled in an impact for the electric capacity (capacitive couplings) formed between distribution and pixel electrode, be reduced in an impact for the electric capacity (capacitive couplings) formed between distribution and pixel electrode.In addition, preferably the maximal value of the projected area that each distribution is overlapping with pixel electrode is less than 1.5 times of minimum value further.
In addition, as other mode, also a distribution can be configured with in the mode in the region of the pixel electrode by being formed with pixel, the electric capacity formed by comparative electrode and pixel electrode is set to Clc, the electric capacity of auxiliary capacitor is set to Cs, by when an electric capacity formed between distribution and pixel electrode is set to Cx, form as follows: Cx/ (Clc+Cs+Cx)≤0.2.In this case, the degree of the problem do not produced on display quality will can relatively be reduced in an impact that the electric capacity formed between distribution and pixel electrode brings.In addition, when being configured with multiple distributions in the mode in the region of the pixel electrode by being formed with pixel, be configured to: become Cx/ (Clc+Cs+Cx)≤0.2 respectively at each the electric capacity Cx formed between distribution and pixel electrode.
In addition, Ke Yishi: be formed with gap between pixel electrode, to be configured with a distribution by the mode in the gap between pixel electrodes.In this case, can suppress capacitive couplings occurs.
In addition, each pixel can have the different secondary pixel of luminance level.In this case, the secondary pixel that this luminance level is different possesses the auxiliary capacitor connected from different auxiliary capacity wirings respectively.Further, to the auxiliary capacitor arranged in the secondary pixel that luminance level is different, by different auxiliary capacity wirings, the direction pair of control signal that variable quantity is identical on the contrary mutually of signal voltage transmission change.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of liquid crystal indicator.
Fig. 2 is the planimetric map of the array base palte that liquid crystal panel is shown.
Fig. 3 is the planimetric map of the colored filter substrate that liquid crystal panel is shown.
Fig. 4 is the planimetric map of the sub-pixel that liquid crystal panel is shown.
Fig. 5 is the figure that the circuit of the sub-pixel that liquid crystal panel is shown is formed.
Fig. 6 is the figure of the distribution structure of the auxiliary capacity wiring that liquid crystal panel is shown.
Fig. 7 is the control block diagram of liquid crystal panel.
Fig. 8 is the figure that the circuit of the sub-pixel that liquid crystal panel is shown is formed.
Fig. 9 is the figure of the change of the electric charge that pixel electrode is shown.
Figure 10 is the figure of the change of the electric charge that pixel electrode is shown.
Figure 11 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 12 illustrates that the waveform produced in the control signal justifies blunt figure.
Figure 13 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 14 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 15 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 16 is the planimetric map that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 17 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 18 is the figure of the equivalent circuit of the liquid crystal panel that one embodiment of the present invention are shown.
Figure 19 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 20 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 21 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 22 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 23 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 24 is the figure of the equivalent circuit of the liquid crystal panel that one embodiment of the present invention are shown.
Figure 25 is the figure of the equivalent circuit of the liquid crystal panel that one embodiment of the present invention are shown.
Figure 26 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 27 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 28 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 29 is the figure that the circuit of the liquid crystal panel that one embodiment of the present invention are shown is formed.
Figure 30 is the figure that the pulsation produced in auxiliary capacity wiring is shown.
Embodiment
Below, the liquid crystal panel of one embodiment of the present invention is described with reference to the accompanying drawings.
This liquid crystal panel 10 as shown in figure 13, is configured with in the row direction in the pixel region 10a of multiple Cs bus 43c (auxiliary capacity wiring), arranges multiple distributions 310 in a column direction.Further, be configured to: this distribution 310 is connected with Cs bus 43c, by Cs bus 43c, auxiliary capacitor is transmitted control signal from this distribution 310.Like this, form the wiring path of multiple c that by Cs bus 43c, auxiliary capacitor Cs transmitted control signal from a distribution 310, reduce the resistance of wiring path of c that auxiliary capacitor Cs transmitted control signal thus, " waveform circle is blunt " of the control signal c sent auxiliary capacitor Cs is suppressed for less.In addition, according to this liquid crystal panel 10, the narrow frame of liquid crystal indicator can be realized.Below, this liquid crystal panel 10 is explained.
At this, first, the structure of the liquid crystal indicator having possessed the liquid crystal panel 10 (with reference to Figure 11) not forming a distribution 310 is summarily described, illustrates " waveform circle is blunt " that produce in Cs bus 43c (auxiliary capacity wiring).Thereafter, the liquid crystal indicator (with reference to Figure 13) being formed with a distribution 310 is described, illustrates and how to improve " waveform circle is blunt ", realize narrow frame.In addition, about the formation of liquid crystal indicator, an example is just shown, the concrete formation of liquid crystal indicator is not limited to embodiment below.In addition, accompanying drawing not necessarily reflects actual product slate.In addition, in fact playing the parts of phase same-action, position suitably encloses identical Reference numeral.In addition, when there is parts, the position of multiple phase same-actions, to the numeral in the bracket appended by identical Reference numeral, word for distinguishing these parts, position.
Fig. 1 schematically illustrates the section constitution of liquid crystal indicator 100.This liquid crystal indicator 100 as shown in Figure 1, possesses liquid crystal panel 10 and backlight 20.Summarily say, liquid crystal panel 10 has rectangular shape as a whole, comprises pair of light-transmissive substrate 11 and 12 (glass substrate).In this embodiment, the table side in two substrates 11 and 12 is colored filter substrate 11 (CF substrate), and inboard is array base palte 12 (TFT substrate).
In this embodiment, as shown in Figure 1, colored filter substrate 11 and array base palte 12 have pixel region 10a respectively.At this, pixel region 10a is the region forming pixel, also referred to as viewing area.Colored filter substrate 11 and array base palte 12 configure relative to one another.Between colored filter substrate 11 and array base palte 12, encapsulant 15 is set in the mode of the surrounding's (peripheral edge portion) surrounding pixel region 10a in the circumferential direction.
Liquid crystal layer 13 is set between colored filter substrate 11 and array base palte 12.The liquid crystal material comprising liquid crystal molecule is sealed with in liquid crystal layer 13.In this liquid crystal material, along with the applying electric field between colored filter substrate 11 and array base palte 12, the direction of orientation of liquid crystal molecule is operated, and optical characteristics changes.Encapsulant 15 seals the liquid crystal material of this liquid crystal layer 13.
Below, in order array base palte 12 and colored filter substrate 11 are described.Fig. 2 and Fig. 3 is the figure of the pixel region 10a being exaggerated liquid crystal panel 10.Wherein, Fig. 2 illustrates the planimetric map of the pixel region part of array base palte 12, and Fig. 3 illustrates the planimetric map of the pixel region part of colored filter substrate 11.The region surrounded by the dotted line A in Fig. 2 and Fig. 3 illustrates the region of 1 pixel forming this liquid crystal panel 10.In this liquid crystal panel 10, the pixel A shown in Fig. 2 and Fig. 3 is arranged as has the rectangular of row and column.In addition, Fig. 4 is 1 sub-pixel A by forming pixel A rplanimetric map after amplification.In addition, Fig. 5 is by the sub-pixel A forming pixel A r, A g, A bthe circuit diagram formed.In addition, Fig. 5 illustrates that the circuit being positioned at 1 sub-pixel of capable j row (i, j) of i in liquid crystal panel 10 is formed.
In this embodiment, array base palte 12 as shown in Figure 2 and Figure 4, forms pixel electrode 42a, 42b, bus 43a ~ 43c (bus line), alignment films 46 (vertical alignment layer), thin film transistor (TFT) 47a, 47b (TFT:thin film transistor) in the table side (liquid crystal layer 13 side) of glass substrate.Pixel electrode 42a, 42b comprise the ITO (indium tin oxide: indium tin oxide) as transparent conductive material.To this pixel electrode 42a, 42b by bus 43a ~ 43c and thin film transistor (TFT) 47a, 47b (with reference to Fig. 2) with the timing supply the specified voltage corresponding to image.Pixel electrode 42a, 42b and bus 43a ~ 43c (with reference to Fig. 2) configure across insulation course.And, in array base palte 12, form the alignment films 46 comprising polyimide etc.On the surface of this alignment films 46, in order to determine the direction of orientation of liquid crystal molecule when not applying voltage and implementation orientation process.In addition, in this embodiment, array base palte 12 possesses auxiliary capacitor Cs.The structure of this auxiliary capacitor of explained later Cs.
In addition, as shown in Figure 3, colored filter substrate 11 is formed with black matrix 52, colored filter 53, comparative electrode 55 and alignment films 56 (vertical alignment layer) in the inboard (liquid crystal layer 13 side) of glass substrate.In order to make light not transmitted through the region between pixel, form black matrix 52 by metals such as Cr (chromium).Red (R), green (G), indigo plant (B) 3 look is there is in colored filter 53.As shown in Figures 2 and 3, the colored filter of red (R), green (G), blue (B) is relative respectively with pixel electrode 42a, 42b of R, G, B of array base palte 12.Form with the downside (side relative with array base palte 12) of colored filter 53 comparative electrode 55 comprising ITO (indium tin oxide: indium tin oxide) at black matrix 52.In addition, alignment films (omitting diagram) is formed in the downside of comparative electrode 55.To the surface also implementation orientation process of this alignment films (omitting diagram).
Spherical or columniform sept (omitting diagram) is also accompanied between colored filter substrate 11 and array base palte 12.Sept is such as formed by plastics, glass etc.The gap of colored filter substrate 11 and array base palte 12 is kept by above-mentioned encapsulant 15 and sept, the interval of maintenance medium crystal layer 13.
In addition, as shown in Figure 1, Polarizer 17,18 is pasted with respectively in the face side of colored filter substrate 11 and the side, the inside of array base palte 12.In this embodiment, as mentioned above, form liquid crystal panel (liquid crystal panel of so-called vertical alignment mode), the alignment films 46,56 of described liquid crystal panel is made up of vertical alignment layer.In the liquid crystal panel of this vertical alignment mode, the deflection axle of 2 Polarizers 17,18 is orthogonal.In addition, in this embodiment, as shown in Figure 1, in the table side of liquid crystal panel 10, housing 30 is installed.On the other hand, at the inboard installation frame 32 of liquid crystal panel 10.Housing 30 and framework 32 support liquid crystal panel 10.And framework 32 supports around the part being equivalent to pixel region 10a of liquid crystal panel 10.Framework 32 is at the outs open being equivalent to pixel region 10a of liquid crystal panel 10.The backlight 20 of this liquid crystal indicator 100 is arranged on the inboard of this liquid crystal panel 10.
As shown in Figure 1, backlight 20 is the external light sources of the inboard (right side in Fig. 1) being configured in liquid crystal panel 10.In this embodiment, backlight 20 possesses multiple light source 22 (such as, cold-cathode tube, light emitting diode (LED) etc.) and backlight chassis 24.Backlight chassis 24 has the box-formed shape towards table side (liquid crystal panel 10 side) opening.Multiple light source 22 is configured in backlight chassis 24.The opening of backlight chassis 24 stacked configure multiple optical sheets 26.
Optical sheet 26 such as rises from the back side has diffuser plate, diffusion sheet, lens and brightness increase sheet in order.The inboard that backlight chassis 24 makes light source 22 be arranged on framework 32 under the state of above-mentioned liquid crystal panel 10.Now, optical sheet 26 is clipped by the surface of the inside of the framework 32 of liquid crystal panel 10 and backlight chassis 24.In addition, as shown in Figure 1, liquid crystal indicator 100 possesses control part 200.Control part 200 possesses circuit light adjusting circuits such as (such as) cold-cathode tube inverter circuits adjusting the brightness (lightness) of backlight 20 according to image, the video of display.This control part 200 such as adjusts the electric power dropped into light source 22, the lightness of adjustment backlight 20.
In this liquid crystal panel 10, in check voltage is applied to colored filter substrate 11 and array base palte 12.Operate the liquid crystal molecule in the liquid crystal layer 13 of liquid crystal panel 10 thus.In this liquid crystal panel 10, by each pixel A (in more detail, each sub-pixel A specified with RGB r, A g, A b) operation liquid crystal layer 13 in liquid crystal molecule.Thus by each pixel A (in more detail, each sub-pixel A specified with RGB r, A g, A b) block the light of backlight 20 or the light of backlight 20 is passed through, and change the transmissivity of light.And liquid crystal indicator 100 also controls the brightness of backlight 20 etc. and image desired by display.In addition, in this embodiment, as shown in Figure 2, with regard to liquid crystal indicator 100, the sub-pixel A specified with RGB r, A g, A bbe split into 2 secondary pixel Pa, Pb further separately.
Below, the driving circuit of liquid crystal panel 10 is described.
In array base palte 12, as shown in Figure 5, bus 43a is the source bus line (data signal line) of (data-signal) of transmitting control signal to the source electrode 121 of thin film transistor (TFT) 47a, 47b.In addition, bus 43b is the grid bus (scan signal line) of (sweep signal) of transmitting control signal to the gate electrode 122 of thin film transistor (TFT) 47a, 47b.In addition, bus 43c is the bus (Cs bus, auxiliary capacity wiring) transmitted control signal to auxiliary capacitor Cs.
In this embodiment, as shown in Figure 2, source bus line 43a configures along the column direction of liquid crystal panel 10.In addition, to pass through each sub-pixel A by RGB regulation respectively r, A g, A bthe mode on side configure source bus line 43a.In addition, in this embodiment, grid bus 43b configures along the line direction of liquid crystal panel 10.To traverse each sub-pixel A r, A g, A bthe mode of middle body configure grid bus 43b.In addition, Cs bus 43c configures along the line direction of liquid crystal panel 10.To traverse each sub-pixel A r, A g, A bthe mode in gap of column direction configure Cs bus 43c.Source bus line 43a is connected with source electrode driver 71.In addition, grid bus 43b is connected with gate drivers 72.In addition, the dry distribution group 180 (with reference to Fig. 5, Fig. 6) that Cs bus 43c and the both sides of the line direction at liquid crystal panel 10 configure is connected.
In this embodiment, as shown in Figure 4 and Figure 5, each sub-pixel A r, A g, A bthin film transistor (TFT) 47a, 47b (TFT) is arranged at the cross section of source bus line 43a and grid bus 43b.Thin film transistor (TFT) 47a, 47b possess source electrode 121, gate electrode 122 and drain electrode 123a, 123b.In this embodiment, source electrode 121 extends to the equipping position of thin film transistor (TFT) 47a, 47b from source bus line 43a.This source electrode 121 is shared by lower films transistor 47a, 47b.Gate electrode 122 is located at grid bus 43b.Drain electrode motor 123a, 123b are disposed in the region of upper and lower secondary pixel 42a, 42b respectively.Semiconductor (omit diagram) is between source electrode 121, gate electrode 122 and between drain electrode 123a, 123b.
In addition, each secondary pixel Pa, Pb possess auxiliary capacitor Cs.In the mode shown in Fig. 4, auxiliary capacitor Cs comprise Cs bus 43c with across dielectric film (omit diagram) auxiliary capacitance electrode 142a, 142b relative with Cs bus 43c.In this embodiment, this auxiliary capacitance electrode 142a, 142b is connected with drain electrode 123a, 123b of thin film transistor (TFT) 47a, 47b respectively by wiring lead 144a, 144b.Auxiliary capacitance electrode 142a, 142b are connected with pixel electrode 42a, 42b of each secondary pixel Pa, Pb by contact hole 142a1, the 142b1 of through interlayer dielectric (omitting diagram).
Cs bus 43c is connected with the dry distribution group 180 being configured with multiple dry distribution 181 ~ 184.In addition, dry distribution group 180 is the general names to the multiple dry distribution 181 ~ 184 gathering distribution.Dry distribution group 180 is configured in the periphery both sides of line direction of liquid crystal panel 10 (in this embodiment, be) of liquid crystal panel 10.Fig. 6 is the figure of the syndeton that Cs bus 43c and dry distribution 181 ~ 184 are shown.
As shown in Figure 6, Cs bus 43c configures along the line direction of liquid crystal panel 10.In addition, Cs bus 43c at the column direction overhead standard width of a room in an old-style house of liquid crystal panel 10 every multiple side by side.As shown in Figure 2, on the line direction of liquid crystal panel 10, the auxiliary capacitor Cs of secondary pixel Pa side by side, Pb is connected with each Cs bus 43c respectively.On the other hand, as shown in Figure 6, the column direction of dry distribution 181 ~ 184 in the dual-side edge of the line direction of liquid crystal panel 10 along liquid crystal panel 10 configures.Further, such as, in the mode shown in Fig. 6, in dry distribution group 180,4 dry distributions 181 ~ 184 are configured.In this case, on the column direction of liquid crystal panel 10, Cs bus 43c is side by side connected with 1 dry distribution every 4 on this column direction.
In the example shown in Fig. 6, the column direction of liquid crystal panel 10 arranges 8 Cs bus 43c (1) ~ (8) in order.In this case, Cs bus 43c connects with identical dry distribution 181 ~ 184 every 4 on the column direction of liquid crystal panel 10.That is, Cs bus 43c (1), 43c (5) are connected with dry distribution 181.Cs bus 43c (2), 43c (6) are connected with dry distribution 182.Cs bus 43c (3), 43c (7) are connected with dry distribution 183.Cs bus 43c (4), 43c (8) are connected with dry distribution 184.In addition, although the diagram of omission, be connected with different dry distributions respectively from the Cs bus 43c being located at the secondary pixel Pa of this liquid crystal panel 10, the auxiliary capacitor Cs of Pb connects.
In addition, in the example shown in Fig. 6, on the column direction of liquid crystal panel 10, Cs bus 43c connects with identical dry distribution 181 ~ 184 every 4, but, in fact, in liquid crystal panel 10, be sometimes provided with more dry distribution (such as, 12 dry distributions).Such as, although the diagram of omission, when liquid crystal panel 10 possesses 12 dry distributions, Cs bus 43c connects with identical dry distribution every 12.In addition, each Cs bus 43c is connected with the dry distribution of regulation, makes the control signal each Cs bus 43c being sent to regulation.Therefore, when liquid crystal panel 10 possesses 12 dry distributions, Cs bus 43c not necessarily must connect with identical dry distribution every 12.
Fig. 7 is the block diagram of the drives structure that liquid crystal panel 10 is shown.As shown in Figure 7, liquid crystal indicator 100 possesses control part 200.Control part 200 combines IC, LSI, CPU, non-volatility memorizer etc.Control part 200 carries out various electronic processing along the program preset, and realizes the function needed.Liquid crystal panel 10 is controlled by control part 200.This control part 200 possesses signal input part 201, timing control part 202, power supply 203 and auxiliary capacitor control part 204.In addition, in the figure 7, the control of auxiliary capacitor Cs (with reference to Fig. 2) eliminates diagram.
From external system (not shown), multiple control signal is inputted to signal input part 201.In the control signal inputted from external system, comprise the signal relevant with the video shown in liquid crystal panel 10.In this embodiment, based on the control signal of input in signal input part 201, transmitted control signal by timing control part 202 pairs of source electrode drivers 71, gate drivers 72.Timing control part 202, according to the multiple control signals inputted from external system (not shown), generates the control signal (sweep signal a, data-signal b) for making gate drivers 72 and source electrode driver 71 drive.Each constituting portion supply working power of power supply 203 pairs of liquid crystal indicators 100, and generate the common electrode voltage (Vcom) of liquid crystal panel 10 and comparative electrode 55 (with reference to Fig. 5) is supplied.
Auxiliary capacitor control part 204 generates the control signal c controlling auxiliary capacitor Cs.In this embodiment, by auxiliary capacitor control part 204, based on the control signal a generated by timing control part 202, b, generate the control signal c controlling auxiliary capacitor Cs.In addition, for making the control signal c of control signal a, the b of gate drivers 72 and source electrode driver 71 driving and control auxiliary capacitor Cs be adjusted timing and supply liquid crystal panel 10 respectively.In addition, in this embodiment, as shown in Figure 7, by being configured with the source electrode substrate of source electrode driver 71, send from control part 200 pairs of liquid crystal panels 10 the control signal c controlling auxiliary capacitor Cs.
In this embodiment, as shown in Figure 7, source electrode driver 71 is connected with and (precisely, forms the RGB sub-pixel A of pixel A in the pixel A of liquid crystal panel 10 r, A g, A b) matrix each row in source bus line 43a (1) ~ source bus line 43a (m) of configuring.Source electrode driver 71 responds the control signal inputted from timing control part 202, selects the normal voltage that should input each pixel A, the normal voltage selected by pixel A supply is controlled to the rotational angle of liquid crystal molecule.
Gate drivers 72 responds the conduction and cut-off that the control signal that inputs from timing control part 202 controls at thin film transistor (TFT) 47a, the 47b arranged at liquid crystal panel 10.In this embodiment, grid bus 43b (1) ~ (n) on gate drivers 72 pairs of liquid crystal panels 10 transmits control signal.When making the control signal of thin film transistor (TFT) 47a, 47b conducting to 1 grid bus 43b transmission, according to this control signal, thin film transistor (TFT) 47a, 47b conducting of each pixel be connected with grid bus 43b.Gate drivers 72 couples of grid bus 43b (1) ~ (n) send the control signal making thin film transistor (TFT) 47a, 47b conducting in order.
The control signal that have adjusted timing is sent from source electrode driver 71 and gate drivers 72.In this embodiment, make the time of the pixel conducting be connected with 1 grid bus 43b at gate drivers 72, send the control signal of the pixel controlling to be connected with this grid bus 43b from source electrode driver 71.Gate drivers 72 makes the time of the whole conducting of pixel be connected with 1 grid bus 43b sometimes referred to as " 1 horizontal sync time ".When gate drivers 72 makes the pixel conducting be connected with 1 grid bus 43b, in this pixel, in this 1 horizontal sync time, thin film transistor (TFT) 43a, 43b conducting.In addition, in next 1 horizontal sync time, the pixel be connected with this grid bus 43b is controlled as cut-off.
Source electrode driver 71 transmits control signal to each source bus line 43a (1) ~ (m) in every 1 horizontal sync time.Thus in the timing of the pixel conducting be connected with 1 grid bus 43b, this pixel A is transmitted control signal.Thus in liquid crystal panel 10, line by line in order to pixel electrode 42a, 42b written information.Further, grid bus 43b (1) ~ (n) is controlled as conducting in order.Form an image shown by liquid crystal panel 10 thus.Therefore, video is divided in chronological order multiple static picture, in liquid crystal panel 10, forms this static picture in chronological order next image every, can animation be shown thus.In addition, form the time of the image shown by liquid crystal panel 10, that is, the time of grid bus 43b (1) ~ (n) sequentially conducting is sometimes referred to as " frame time (flame time) ".
In this embodiment, as shown in Figure 2 and Figure 4,1 pixel A comprises the sub-pixel A specified with RGB r, A g, A b.And, each sub-pixel A r, A g, A bbe divided into 2 secondary pixel Pa, Pb respectively.
In pixel electrode 42a, 42b of secondary pixel Pa, Pb, as shown in Figure 4 and Figure 5, being clipped in the middle by liquid crystal layer 13 between the comparative electrode 55 of relative colored filter substrate 11 side, form the capacitor (Clc) keeping electric charge.In addition, at Cs bus 43c with between auxiliary capacitance electrode 142a, 142b, form auxiliary capacitor Cs.In addition, pixel electrode 42a, 42b is connected with source bus line 43a by thin film transistor (TFT) 47a, 47b.The dry distribution 181 ~ 184 that Cs bus 43c arranges with the dual-side edge of the line direction at liquid crystal panel 10 is connected.Further, from auxiliary capacitor control part 204, dry distribution 181 ~ 184 is supplied to the control signal c controlling auxiliary capacitor Cs.
As mentioned above, thin film transistor (TFT) 47a, 47b according to the sweep signal from grid bus 43b, in suitable timing conducting.In this timing, pixel electrode 42a, 42b write is input to the data-signal of source bus line 43a.In other words, in pixel electrode 42a, 42b, electric charge is stored according to the data-signal being input to source bus line 43a.
In this embodiment, liquid crystal panel 10 is controlled with so-called reversion driving.In this case, the data-signal of source bus line 43a is input to by each point (in this embodiment, by each sub-pixel) reversed polarity.Such as, as shown in Figure 8, when have input the data-signal with (+) electric charge to certain sub-pixel of the i-th row, in the sub-pixel that (i+1) arranges, input has the data-signal of (-) electric charge.In addition, in the sub-pixel that (i+2) arranges, input has the data-signal of (+) electric charge.And in the sub-pixel that (i+3) arranges, input has the data-signal of (-) electric charge.Like this, in identical frame time, the polarity of the data-signal of every 1 row input is reversed.In addition, although the diagram of omission, in this embodiment, even if also can reverse to the polarity of the data-signal of adjacent sub-pixel input in the row direction.In addition, the polarity of the data-signal of identical sub-pixel input is reversed according to each frame time.
In addition, in this embodiment, after thin film transistor (TFT) 46a, 47b cut-off, Cs bus 43c is sent to the control signal comprising square wave.Now, because the impact on the voltage that auxiliary capacitor Cs applies, the electric charge stored in pixel electrode 42a, 42b of secondary pixel Pa, Pb is remained on.In addition, in this embodiment, as shown in Figure 5, to the direction pair of control signal that variable quantity is identical on the contrary mutually of the auxiliary capacitor Cs difference signal voltage transmission change of the secondary pixel Pa in identical sub-pixel, Pb.In this case, the side in secondary pixel Pa, Pb brightens (Bright), the opposing party dimmed (Dark).
That is, pair of control signal c (i), c (i+1) are sent to the auxiliary capacitor Cs separately of secondary pixel Pa, the Pb in this sub-pixel.Pair of control signal c (i), c (i+1) comprise the direction control signal that variable quantity is identical on the contrary mutually of signal voltage change respectively.As this control signal c, in the example shown in fig. 8, service voltage level is with the square wave that changes of cycle of regulation.At this, voltage level (high level) higher for square wave is set to " H ", voltage level (low level) lower for square wave is set to " L ".In addition, data-signal a is sent to source bus line 43a (j).Sweep signal b is sent to grid bus 43b (i).Cs bus 43c (i), 43c (i+1) are transmitted control signal c (i), c (i+1).This data-signal a, sweep signal b and Cs bus 43c (i), 43c (i+1) are respectively by adjustment timing.
Below, the sub-pixel from source bus line 43a input with the data-signal of (+) electric charge is described.Such as, in fig. 8, certain sub-pixel that the i-th row, (i+2) arrange conforms to therewith.Fig. 9 illustrates that certain sub-pixel for the i-th row shown in Fig. 8 has the frame time of the data-signal of (+) electric charge to the runout of the voltage that pixel electrode 42a, 42b apply from source bus line 43a input.
In this case, as shown in Figure 9, in this sub-pixel, t1 ~ t2 during thin film transistor (TFT) 47 conducting, stores (+) electric charge e (i) according to data-signal in pixel electrode 42a, 42b.Thereafter, after the timing t 3 that thin film transistor (TFT) 47 ends, the electric charge stored in pixel electrode 42a, 42b is subject to the impact of auxiliary capacitor Cs and runout.
Now, in the secondary pixel Pa of a side in this sub-pixel, from Cs bus 43c (i), auxiliary capacitor Cs is transmitted control signal c (i).Become " H " after the timing t 3 that the voltage level of control signal c (i) ends at thin film transistor (TFT) 47a.Therefore, in this secondary pixel Pa, (+) electric charge e (i) runout stored in pixel electrode 42a just (+) is.Thus, secondary pixel Pa brightens (Bright).
On the other hand, in the secondary pixel Pb of the opposing party in this sub-pixel, from Cs bus 43c (i+1), auxiliary capacitor Cs is transmitted control signal c (i+1).Become " L " after the timing t 3 that the voltage level of control signal c (i+1) ends at thin film transistor (TFT) 47b.Therefore, in this secondary pixel Pb, (+) electric charge e (i) runout stored in pixel electrode 42b is negative (-).Thus, secondary pixel Pb dimmed (Dark).
Below, the sub-pixel from source bus line 43a input with the data-signal of (-) electric charge is described.Such as, in fig. 8, be positioned at the sub-pixel that (i+1) arranges, (i+3) arranges to conform to therewith.Figure 10 illustrates that certain sub-pixel arranged for (i+1) shown in Fig. 8 has the frame time of the data-signal of (-) electric charge to the runout of the voltage that pixel electrode 42a, 42b apply from source bus line 43a input.
In this case, as shown in Figure 10, in this sub-pixel, t1 ~ t2 during thin film transistor (TFT) 47 conducting, stores (-) electric charge e (i+1) according to data-signal in pixel electrode 42a, 42b.Thereafter, after the timing t 3 that thin film transistor (TFT) 47 ends, the electric charge stored in pixel electrode 42a, 42b is subject to the impact of auxiliary capacitor Cs and runout.
Now, in the secondary pixel Pa of a side in this sub-pixel, from Cs bus 43c (i+1), auxiliary capacitor Cs is transmitted control signal c (i+1).Become " L " after the timing t 3 that the voltage level of control signal c (i+1) ends at thin film transistor (TFT) 47a.Therefore, in this secondary pixel Pa, (-) electric charge e (i+1) runout stored in pixel electrode 42a is negative (-).Thus, secondary pixel Pa brightens (Bright).
On the other hand, in addition, in the secondary pixel Pb of the opposing party in this sub-pixel, from Cs bus 43c (i+2), auxiliary capacitor Cs is transmitted control signal c (i+2).Become " H " after the timing t 3 that the voltage level of control signal c (i+2) ends at thin film transistor (TFT) 47b.Therefore, in this secondary pixel Pb, (-) electric charge e (i+1) runout stored in pixel electrode 42b just (+) is.Thus, secondary pixel Pb dimmed (Dark).
Like this, in this embodiment, each sub-pixel A r, A g, A bthere is secondary pixel Pa, Pb that luminance level is different.Further, secondary pixel Pa, Pb possess auxiliary capacitor Cs respectively.The auxiliary capacitor Cs of this secondary pixel Pa, Pb connects from different Cs bus 43c (auxiliary capacity wiring) respectively.Pair of control signal c is sent to the auxiliary capacitor Cs arranged in secondary pixel Pa, Pb that luminance level is different.In the control signal that this pair of control signal c sent is by different Cs bus 43c transmission, it is the direction signal that variable quantity is identical on the contrary mutually of signal voltage change.Control the luminance level of secondary pixel Pa, Pb thus.
Cs bus 43c arranges along the line direction of liquid crystal panel 10 respectively.In addition, Cs bus 43c arranges many on the column direction of liquid crystal panel 10.And each secondary pixel Pa arranged on this line direction, the auxiliary capacitor Cs of Pb are connected with Cs bus 43c a succession ofly.This Cs bus 43c such as connects (with reference to Fig. 6) every several with identical dry distribution 181 ~ 184 on the column direction of liquid crystal panel 10.Identical control signal c is sent to the Cs bus 43c that identical dry distribution 181 ~ 184 connects.In addition, in figure 6, in order to simplify accompanying drawing, illustrating dry distribution 181 ~ 184 and being 4 and the mode connected with identical dry distribution every 4.Liquid crystal panel 10 is not particularly limited in which.In addition, when the direction pair of control signal that variable quantity is identical on the contrary mutually of signal voltage transmission change, dry distribution is 1 group with 2, configuration even number root.
Like this, in so-called " many pixel drivers ", pixel A adjacent in a column direction in the pixel A of rectangular arranging is sent respectively in data-signal to the control signal making polarity that reversion occur.And, to direction variable quantity is identical on the contrary mutually pair of control signal c (k), the c (k+1) of the auxiliary capacitor Cs signal voltage transmission change arranged in the 1st secondary pixel Pa with the 2nd secondary pixel Pb.In addition, make it synchronous as 1 group 2 Cs bus 43c of the direction phase pair of control signal that variable quantity is identical on the contrary sending the change of this signal voltage, the phase place of the control signal making other organize staggers one by one.Such as, when supplying identical waveform by 12 dry distributions and making 6 groups of control signals of reversal of poles, the mode staggered equably to make 6 groups of control signals makes phase place stagger 30 degree one by one for 1 group.
In the structure of this so-called many pixel drivers, in 1 sub-pixel, there are 2 secondary pixels.Such as, when there occurs picture element flaw in the secondary pixel of a side, and when there is not picture element flaw in the secondary pixel of the opposing party, can prevent this sub-pixel from can not play function completely.Therefore, the ratio of normal pixel can be maintained higher.In addition, in this embodiment, the lightness of secondary pixel Pa, Pb is different.In other words, a side (such as, the secondary pixel Pa of upside) forms bright pixel, and the opposing party (such as, the secondary pixel Pb of downside) forms dark pixel.In this case, each sub-pixel A of RGB can more fine be carried out r, A g, A bbrightness adjustment, the display of the color of intermediate grey scales etc. also becomes abundant.In addition, in patent documentation 1, also describe the function of this many pixel driver.
In the liquid crystal indicator 100 of this many pixel driver, as mentioned above, in the control signal controlling auxiliary capacitor, square wave is employed.The phenomenon being called as " waveform circle is blunt " is produced in this square wave." waveform circle is blunt " refers to the phenomenon producing distortion in this waveform.Below, this " waveform circle is blunt " phenomenon is described.
Such as, in the above-described embodiment, have input square wave.Preferably all maintain identical waveform in arbitrary sub-pixel of this square wave in liquid crystal panel 10." waveform circle is blunt " can be considered because the impact sending the resistance of the distribution of the control signal c of auxiliary capacitor Cs etc. produces.
That is, as shown in Figure 5, the Cs bus 43c (auxiliary capacity wiring) that auxiliary capacitor Cs and the line direction along liquid crystal panel 10 configure is connected.Such as, as shown in figure 11, the dry distribution 181 ~ 184 that Cs bus 43c and the dual-side edge of the line direction at liquid crystal panel 10 configure is connected.On the column direction of liquid crystal panel 10, this Cs bus 43c connects, every control signal c (1) ~ c (4) that several transmission is identical every several with identical dry distribution 181 ~ 184.In addition, in fig. 11, for the ease of diagram, the radical of dry distribution 181 ~ 184, Cs bus 43c is simplified.Such as, although illustrate the situation that dry distribution is 4, the radical of dry distribution is not limited to 4.
Dry distribution 181 ~ 184 is connected with the auxiliary capacitor control part 204 of the control signal sending auxiliary capacitor Cs respectively.In this case, the auxiliary capacitor Cs in liquid crystal panel 10 is transmitted control signal c from auxiliary capacitor control part 204 by dry distribution 181 ~ 184, Cs bus 43c.In this embodiment, as shown in Figure 7, each dry distribution 181 ~ 184 is transmitted control signal c from control part 200 by the substrate of source electrode driver 71.Therefore, to transmit control signal c from the upside (being equipped with the side of source electrode driver 71) of liquid crystal panel 10 to dry distribution 181 ~ 184.
In this case, such as, can consider compared with the Cs bus 43c (U) being configured in top in the Cs bus 43c in liquid crystal panel 10, the elongated and resistance of Cs bus 43c (D) wiring path to auxiliary capacitor Cs being configured in bottom uprises.Therefore, be configured in liquid crystal panel 10 top Cs bus 43c (U) compared with, it is blunt that the Cs bus 43c (D) being configured in bottom is easy to produce waveform circle.
Figure 12 schematically illustrates " waveform circle is blunt ".That is, Figure 12 illustrates as controlling the control signal c of auxiliary capacitor Cs and the waveform of square wave that inputs.As mentioned above, be configured in liquid crystal panel 10 top Cs bus 43c (U) compared with, it is blunt that the Cs bus 43c (D) being configured in bottom is easy to produce waveform circle.When producing waveform circle and being blunt, such as, as shown in figure 12, the rising of square wave becomes slow.In fig. 12, waveform c (U) illustrates the waveform to the control signal c that the Cs bus 43c (U) on the top of liquid crystal panel 10 supplies.Waveform c (D) illustrates the waveform to the control signal c that the Cs bus 43c (D) of the bottom of liquid crystal panel 10 supplies.The waveform illustrated between waveform c (U) and waveform c (D) illustrates the waveform to the control signal c that the Cs bus 43c of the centre of liquid crystal panel 10 supplies.Like this, exist and be inclined to as follows: along with the top from liquid crystal panel 10 is to bottom, at leisure original shape is lost to the waveform of the control signal c that Cs bus 43c supplies.
In addition, according to the standard of so-called full HD display (full high definition:Full HD), form 1920 pixels in the horizontal direction, form 1080 pixels in vertical direction.In this case, according to the structure of above-mentioned many pixel drivers, in 1 pixel A, form the sub-pixel A specified with RGB r, A g, A b, and, each sub-pixel A r, A g, A bbe divided into 2 secondary pixel Pa, Pb respectively.Therefore, form 1920 × 3 secondary pixels in the horizontal direction, form 1080 × 2 secondary pixels in vertical direction.Like this, when the pixel count of vertical direction becomes many, with its amount correspondingly, in the upper and lower of liquid crystal panel 10, the blunt difference of waveform circle is easy to become large.In addition, can consider: when horizontal direction pixel count become many time, with its correspondingly, the quantity of the auxiliary capacitor Cs be connected with Cs bus 43c becomes many, and therefore, the resistance of Cs bus 43c also becomes large.When the resistance of Cs bus 43c becomes large, with its amount correspondingly, be easy to produce waveform circle blunt, in the upper and lower of liquid crystal panel 10, the difference of waveform is easy to become large.
As shown in figure 12, blunt according to waveform circle, when the waveform of the control signal supplied the Cs bus 43c of liquid crystal panel 10 becomes large by each Cs bus 43c, the effect of many pixel drivers reduces sometimes.In addition, blunt according to waveform circle, when the waveform that there is control signal loses the Cs bus 43c of original shape significantly, in liquid crystal panel 10, likely produce the spot (striped spot) of striated in the row direction.
In addition, as reducing 1 blunt method of this waveform circle, such as, increase respectively slightly at the dry distribution 181 ~ 184 (with reference to Figure 11) of the dual-side edge of the line direction of liquid crystal panel 10 configuration, reduce the resistance of dry distribution 181 ~ 184.But, when increasing thick dry distribution 181 ~ 184 respectively, with its amount correspondingly, need space at the edge part of the both sides of liquid crystal panel 10.Such as, consider, in the large-scale tv liquid crystal panels 10 such as 65 inch, to configure the situation of 12 dry distributions in the both sides of liquid crystal panel 10.In this case, in order to obtain sufficient effect under the degree not producing striated spot, as the space of the dry distribution of configuration, the width needing to arrange about 1cm at the edge part of the both sides of liquid crystal panel 10 can be considered.The requirement obtaining this space and narrow frame in the both sides of liquid crystal panel 10 is runed counter to.
The present inventor, in order to improve this state, carries out various research, has found to reduce the blunt new method of waveform circle.That is, as shown in figure 13, the present invention possesses multiple the distributions 310 configured in a column direction in pixel region 10a.Further, this distribution 310 is connected with Cs bus 43c.In addition, the control signal c of auxiliary capacitor Cs is generated by control part 200 (specifically, auxiliary capacitor control part 204 (with reference to Fig. 7)).In this embodiment, each distribution 310 is transmitted control signal c from control part 200 (with reference to Fig. 7) by the substrate of source electrode driver 71.Further, the wiring path of the c that by Cs bus 43c, auxiliary capacitor Cs to be transmitted control signal from distribution 310 is formed.
In this case, multiple distributions 310 can be set in pixel region 10a.By arranging multiple distributions 310, the wiring path of multiple c that by Cs bus 43c, auxiliary capacitor Cs transmitted control signal from a distribution 310 can be formed.In this case, multiple wiring path can be formed, therefore, the resistance of the wiring path of the c that transmits control signal to auxiliary capacitor Cs can be suppressed for less.In addition, in this case, be more increased in the quantity of the distribution 310 arranged in pixel region 10a, more can reduce the resistance propping up distribution 310 one by one and formed, generally speaking, the resistance of wiring path of the c that can reduce to transmit control signal to auxiliary capacitor Cs.Therefore, the defect that " waveform circle is blunt " causes can when increasing the quantity of a distribution 310, even if constriction 1 Gen Genzhi distribution 310, also be improved.
In addition, as shown in figure 13, when arranging multiple as above distribution 310 in pixel region 10a, the wiring path of the c that by Cs bus 43c, auxiliary capacitor Cs to be transmitted control signal from distribution 310 is formed.Therefore, the defect that " waveform circle is blunt " causes can even if the dry distribution 181 ~ 184 of constriction, also be suppressed.In addition, can be transmitted control signal c to auxiliary capacitor Cs by Cs bus 43c from distribution 310, therefore, even if remove the dry distribution 181 ~ 184 in the configuration of the dual-side edge of the line direction of liquid crystal panel 10, also can suppress the defect that " waveform circle is blunt " causes.In addition, dry distribution 181 ~ 184 also can only in the method, edge portion configuration of the line direction of liquid crystal panel 10.
In addition, in this case, as shown in figure 14, the multiple horizontal dry distribution 320 configured at the edge part of the column direction of liquid crystal panel 10 can be possessed.In this embodiment, at the edge part (edge part of column direction) of the upside of liquid crystal panel 10, along the horizontal dry distribution 320 of line direction distribution, a distribution 310 is connected with this horizontal dry distribution 320.By this horizontal dry distribution 320, each distribution 310 is electrically connected, and the wiring path to the control signal of each auxiliary capacitor Cs is homogenized further, and the difference of the blunt waveform caused of waveform circle diminishes.The defect that " waveform circle is blunt " causes can be suppressed thus.In this case, at the edge part of the column direction of liquid crystal panel 10, need the space configuring multiple horizontal dry distribution 320, but this horizontal dry distribution 320 is the distributions for connecting a distribution 310, do not need so thick, configure the space of multiple horizontal dry distribution 320 without the need to so large width yet.Such as, when full HD display standard this large-scale tv of 65 inch liquid crystal panel 10 and configuration 12 horizontal dry distribution 320, if there is the width of 1 ~ 3mm degree at the edge part of the column direction of liquid crystal panel 10, then can configure required horizontal dry distribution 320.
Below, the connection of a distribution 310 and Cs bus 43c is described.Such as, as shown in Figure 6, on the column direction of liquid crystal panel 10, many Cs bus 43c are arranged.To the control signal of this Cs bus 43c every the identical auxiliary capacitor Cs of several transmission.That is, in the example shown in Fig. 6,4 dry distributions 181 ~ 184 are configured in the dual-side edge of the line direction of liquid crystal panel 10.Further, be configured with multiple Cs bus 43c in a column direction to connect with identical dry distribution every 4.Identical control signal is supplied every 4 thus to being configured with multiple Cs bus 43c in a column direction.
Like this, sometimes to Cs bus 43c every the identical control signal of several supply.In this case, multiple the distributions 310 configured in pixel region 10a are divided into multiple groups.Further, be connected with auxiliary capacitor control part 204 in the mode distribution belonging to identical group being sent to identical control signal.And, 1 Cs bus 43c with belong to 1 distribution 310 organized and be connected.1 control signal can be supplied thus to 1 Cs bus 43c.
When to Cs bus 43c every 4 supplies identical control signal, as shown in figure 15, multiple the distributions 310 configured in pixel region 10a are divided into 4 groups of I ~ IV.Further, in the mode distribution 310 belonging to identical group being sent to identical control signal, a distribution 310 is connected with auxiliary capacitor control part 204 (with reference to Figure 14).Cs bus 43c connects with the distribution 310 belonging to identical group every 4.Multiple the distributions 310 couples of Cs bus 43c being subordinated to identical group thus supply identical control signal.Further, identical control signal can be given to the auxiliary capacitor Cs that this Cs bus 43c connects.
In addition, as shown in Figure 14 and Figure 15, when liquid crystal panel 10 edge part in the row direction possesses multiple dry distribution 181 ~ 184, Cs bus 43c is connected with 1 dry distribution in multiple dry distribution 181 ~ 184.Further, by auxiliary capacitor control part 204 (with reference to Figure 14), this 1 dry distribution is transmitted control signal, described control signal with 1 that belongs to that this Cs bus 43c connects is organized to prop up the control signal that distribution 310 sends identical.
In addition, in this embodiment, as shown in Figure 14 and Figure 15, liquid crystal panel 10 possesses the multiple horizontal dry distribution 320 configured at the edge part (edge part on the upside of in illustrative example) of column direction.The distribution 310 belonging to 1 group is connected with 1 horizontal dry distribution 320, and described 1 horizontal dry distribution 320 is different from the horizontal dry distribution 320 that the distribution 310 that other is organized connects.In this case, belong to the distribution 310 sending 1 of identical control signal group by auxiliary capacitor control part 204 and be electrically connected by horizontal dry distribution 320, therefore, the waveform circle produced in each distribution can be reduced blunt.
In addition, in pixel region 10a, configuration props up distribution 310, as shown in Figure 16 and Figure 17, a distribution 310 can be configured in each pixel A of liquid crystal panel 10.In this case, in each pixel A, distribution 310 is propped up in similarly configuration respectively.Each pixel A can be made thus to be configured to identical pixel, can to prevent from producing spot in the display of each pixel A.
Such as, as shown in Figure 16 and Figure 17, when each pixel A of liquid crystal panel 10 possesses RGB sub-pixel respectively, to pass through the R sub-pixel A in RGB sub-pixel rmode configure distribution 310.Like this, to R sub-pixel A rwhen configuration props up distribution 310, to all pixel A of liquid crystal panel 10, similarly to pass through R sub-pixel A rmode configure distribution 310.Each pixel A can be made thus to be configured to identical pixel, can to prevent from producing spot in the display of each pixel A.
In addition, although the diagram of omission, also can to pass through G sub-pixel A gmode configure distribution 310.In addition, can also to pass through B sub-pixel A bmode configure distribution 310.In this case, by making each pixel A be configured to identical pixel, also can prevent from producing spot in the display of each pixel A.In addition, such as, can to all sub-pixel A in RGB sub-pixel r, A g, A ba distribution 310 is set respectively.In addition, can to from RGB sub-pixel A r, A g, A bthe sub-pixel of the 2 kinds of colors selected arranges a distribution 310 respectively.
Now, to which sub-pixel A r, A g, A ba configuration distribution 310, for liquid crystal panel 10, will consider that the character of each pixel A etc. selects suitable sub-pixel.Such as, in order to prevent the transmissivity of whole pixel A from reducing, the sub-pixel less on the transmissivity impact of whole pixel can be selected.Such as, at sub-pixel A r, A g, A bin sub-pixel A gwhen higher to the contribution rate of the transmissivity of whole pixel A, as the sub-pixel making a distribution 310 pass through, select other the sub-pixel A less on the impact of the transmissivity of whole pixel r, A b.In addition, such as, consider the impact of the color sensation on the color shown by whole pixel, select the sub-pixel that a distribution 310 is passed through.
Such as, in addition, at sub-pixel A r, A g, A bin sub-pixel A bbring the impact of the transmissivity of light on whole pixel A minimum when, a distribution 310 can be made by this sub-pixel A blight is suppressed for less the impact of the transmissivity of whole pixel A.In addition, at sub-pixel A r, A g, A bin sub-pixel A rwhen less on the impact of the color sensation of whole pixel A, a distribution 310 can be made by this sub-pixel A rthe impact of the color sensation on whole pixel A is suppressed for less.Similarly, be suitable for making a distribution 310 by sub-pixel A r, A g, A bin sub-pixel A gwhen, make a distribution 310 by this sub-pixel A g.In addition, the color sensation of pixel A can be eliminated by carrying out adjustment with the color of backlight 20.Such as, make a distribution 310 by sub-pixel A r, thus, when the blue grow of whole pixel A, in order to eliminate this situation, select the backlight etc. sending yellowish light also can adjust the color coordination of whole pixel A.Which kind of in addition, on the contrary, also can select to make to prop up the sub-pixel of distribution 310 by color according to the color coordination of used backlight.
In addition, according to the formation of liquid crystal panel 10, neither that RGB sub-pixel A shown in Fig. 2 and Fig. 3 during being configured with of pixel A r, A g, A bformation.In this case, with by multiple sub-pixel, the mode of any one sub-pixel suitable configures a distribution 310.In addition, in pixel region 10a, form a distribution 310, such as, can not hinder the mode of source bus line 43a along a source bus line 43a configuration distribution 310.Like this, can at the partial configuration except peristome (region that light passes through) of array base palte 12.In addition, also a distribution 310 can be configured in the mode in the region by being formed with pixel electrode 42a, 42b.
In addition, Figure 18 illustrates the equivalent circuit when forming distribution 310 in the mode in the region by being formed with pixel electrode 42a, 42b.In this case, as shown in figure 18, sometimes between pixel electrode 42a, 42b and a distribution 310 of secondary pixel Pa, Pb, capacitive couplings Cx (1) ~ Cx (2) is formed.In addition, in this case, this capacitive couplings Cx changes the voltage of pixel electrode 42a, 42b according to control signal c (k), the c (k+1) that supply a distribution 310 sometimes.At this, sometimes different from the control signal c supplied the auxiliary capacitor Cc arranged in this secondary pixel Pa, Pb to transmit control signal c, described control signal c of the distribution 310 relatively configured with pixel electrode 42a, 42b.Such as, in the equivalent circuit shown in Figure 18, in secondary pixel Pb, the control signal c (k+1) sent auxiliary capacitor Cc is different from the control signal c (k) supplied the distribution 310 configured in the mode in the region of the pixel electrode 42b by being formed with this secondary pixel Pb.In this case, in this secondary pixel Pb, the voltage of pixel electrode 42b is subject to the impact of capacitive couplings Cx (2).The impact of this capacitive couplings Cx is uneven in all pixel A, therefore, sometimes becomes display uneven (display spot), produces the problem on display quality.
In this case, in each secondary pixel Pa, Pb, as shown in figure 18, the electric capacity formed by comparative electrode 55 and pixel electrode 42a, 42b is being set to Clc, the electric capacity of auxiliary capacitor Cs is set to Cs, by when distribution 310 and the electric capacity that formed between pixel electrode 42a, 42b are set to Cx, be configured to Cx/ (Clc+Cs+Cx)≤0.2.When being configured to Cx/ (Clc+Cs+Cx)≤0.2, by secondary pixel Pa, Pb as a whole, as compared to the electric capacity Clc, the auxiliary capacitor Cs that are formed with pixel electrode 42a, 42b by comparative electrode 55, capacitive couplings Cx is not relatively so large.Therefore, when by eye-observation liquid crystal panel 10, can prevent from being identified as display inequality, the problem on display quality can be prevented.
Figure 19 ~ Figure 21 illustrates the mode of a configuration distribution 310 in the region being so formed with pixel electrode 42a, 42b.In the mode shown in Figure 19,1 source bus line 43a is respectively configured to 1 secondary pixel Pa, Pb.Being formed with secondary pixel Pa, the substantially central portion in region of pixel electrode 42a, 42b of Pb divides and forms auxiliary capacitor Cs.In this embodiment, auxiliary capacitor Cs is that the electrode 143 that makes to connect with Cs bus 43c is relative across dielectric film with auxiliary capacitance electrode 142a, 142b.Auxiliary capacitance electrode 142a, 142b are connected with the drain electrode of thin film transistor (TFT) 47a, 47b respectively by wiring lead 144a, 144b.The electrode 143 relative with auxiliary capacitance electrode 142a, 142b is connected with Cs bus 43c by wiring lead 146.In addition, relative with auxiliary capacitance electrode 142a, 142b electrode 143 is formed at conductor layer 148a, 148b of configuring in the row direction respectively.In addition, prop up distribution 310 to be connected with Cs bus 43c by contact hole 160.In this embodiment, with each sub-pixel A by RGB r, A g, A bin, sub-pixel A rmode configure distribution 310.
Figure 20 illustrates the mode 1 in the mode of Figure 19 secondary pixel Pa, Pb being configured respectively to 2 source bus line 43a.In this case, in adjacent secondary pixel Pa, Pb, thin film transistor (TFT) 47a, 47b can be set in gate electrode 122 mode respect to one another.In addition, Figure 21 illustrates the mode that the allocation position of distribution 310 is configured close to the method, edge portion of pixel electrode 42a, 42b.In this case, as shown in figure 18, in secondary pixel Pa, Pb unit, Cx/ (Clc+Cs+Cx)≤0.2 is configured to.Even if thus when configuring distribution 310 in the mode in the region by being formed with pixel electrode 42a, 42b, the problem on the display quality that the impact that also can prevent capacitive couplings Cx causes.
In addition, as shown in Figure 22 and Figure 23, gap s1 can be formed with between pixel electrode 42a, 42b, to be configured a distribution 310 by the mode of this gap s1.It is such that equivalent circuit in this case becomes Figure 24.In this case, as shown in figure 24, a configuration distribution 310 in the gap s1 formed between pixel electrode 42a, 42b.Therefore, capacitive couplings Cx can not be formed, the problem on the display quality that the impact that can not produce capacitive couplings Cx causes.
In addition, such as, in many pixel drivers, as shown in Figure 5 and Figure 8,1 sub-pixel comprises 2 secondary pixels.In the secondary pixel of a side in 2 sub-pixels, the control signal of auxiliary capacitor Cs changes from high level to low level, brightens thus.In addition, in the secondary pixel of the opposing party, the control signal of auxiliary capacitor Cs changes from low level to high level, dimmed thus.Therefore, in many pixel drivers, as shown in Figure 5 and Figure 8, to the direction pair of control signal that variable quantity is identical on the contrary mutually of 2 secondary pixel signal voltage transmission changes of formation 1 sub-pixel.
In this case, 2 distributions 310 are configured in the mode in the region by being formed with pixel electrode 42a, 42b.Further, direction variable quantity is identical on the contrary mutually pair of control signal c (k), the c (k+1) of signal voltage change can be supplied to these 2 distributions 310.Equivalent circuit in this case shown in Figure 25.In this case, between pixel electrode 42a, 42b and a distribution 310 of secondary pixel Pa, Pb, capacitive couplings Cx (1) ~ Cx (4) is formed.But, 2 distributions 310 in the region by being formed with pixel electrode 42a, 42b are supplied to direction variable quantity is identical on the contrary mutually pair of control signal c (k), the c (k+1) of signal voltage change.Therefore, the impact that the capacitive couplings Cx (1) formed in secondary pixel Pa, Cx (3) bring is cancelled out each other.In addition, therefore, the impact that the capacitive couplings Cx (2) formed in secondary pixel Pb, Cx (4) bring is cancelled out each other.Even if thus when with by being formed with secondary pixel Pa, the mode in region of pixel electrode 42a, 42b of Pb configure distribution 310, the problem on the display quality that the impact that also can prevent capacitive couplings Cx causes.
In addition, in this case, can make at the electric capacity of the capacitive couplings Cx (1) to be formed between distribution 310 and pixel electrode 42a, Cx (3) equal.In addition, can make at the electric capacity of the capacitive couplings Cx (2) to be formed between distribution 310 and pixel electrode 42b, Cx (4) equal.Thus, the effect that the impact that capacitive couplings Cx (1) ~ Cx (4) brings is cancelled each other uprises.In addition, when forming multiple capacitive couplings Cx in secondary pixel Pa, a Pb, the maximal value of the electric capacity of the plurality of capacitive couplings Cx can be less than 2 times of minimum value.That is, the maximal value of the electric capacity of above-mentioned capacitive couplings Cx (1), Cx (3) is less than 2 times of minimum value.In addition, the maximal value of the electric capacity of above-mentioned capacitive couplings Cx (2), Cx (4) is less than 2 times of minimum value.In addition, the maximal value of further preferred multiple electric capacity is less than 1.5 times of minimum value.
In addition, when with by being formed with secondary pixel Pa, the mode in region of pixel electrode 42a, 42b of Pb configure multiple distributions 310, each distribution 310 can be made equal with the projected area of pixel electrode 42a, 42b overlap.Such as, in the planimetric map of substrate being formed with pixel electrode 42a, 42b, a distribution 310 is equal in multiple distributions with the area of pixel electrode 42a, 42b overlap.The electric capacity of the multiple capacitive couplings Cx formed by the plurality of distribution 310 and pixel electrode 42a, 42b is thus similar to.Thus, the effect that the plurality of capacitively coupled impact is cancelled becomes large.In addition, the maximal value of the projected area that each distribution 310 is overlapping with pixel electrode 42a, 42b can be less than 2 times of minimum value.In this case, further preferably: the maximal value of the projected area that each distribution 310 is overlapping with pixel electrode 42a, 42b can be less than 1.5 times of minimum value.Like this, in the planimetric map of substrate being formed with pixel electrode 42a, 42b, the area propping up distribution 310 overlapping with pixel electrode 42a, 42b is more close in multiple distributions, and the electric capacity of multiple capacitive couplings Cx is more approximate, thus, the effect that the plurality of capacitively coupled impact is cancelled becomes large.
In this case, Figure 26 ~ Figure 29 illustrates respectively as under type: in the mode of many pixel drivers, 2 distributions 310a, 310b being supplied to the direction pair of control signal that mutually variable quantity is identical on the contrary of signal voltage change with by being formed with secondary pixel Pa, the mode in region of pixel electrode 42a, 42b of Pb configures.
Above as shown in figure 13, in the pixel region 10a of liquid crystal panel 10 being configured with multiple Cs bus 43c (auxiliary capacity wiring) along line direction, multiple distributions 310 are configured along column direction.Further, be configured to: this distribution 310 is connected with Cs bus 43c, by Cs bus 43c, auxiliary capacitor transmitted control signal from this distribution 310.Like this, form the wiring path of multiple c that by Cs bus 43c, auxiliary capacitor Cs transmitted control signal from a distribution 310, the resistance of the wiring path to the control signal c that auxiliary capacitor Cs sends can be reduced thus, " waveform circle is blunt " of the control signal c sent auxiliary capacitor Cs can be suppressed for less.
But, also there is following effect: this distribution 310 makes the pulsation Vcs1 produced in Cs bus 43c reduce.That is, as shown in Fig. 5 and Figure 30, in liquid crystal panel 10, side's electrode of auxiliary capacitor Cs is formed by a part of pixel electrode 42a, 42b.According to the timing △ T of sweep signal SG in thin film transistor (TFT) 47 conducting, apply the voltage needed for pixel electrode 42a, 42b of this pixel A from source electrode driver 71 couples of source bus line 43a.When voltage needed for applying pixel electrode 42a, 42b, sometimes in the Cs bus 43c be connected with pixel electrode 42 by auxiliary capacitor Cs, produce Vcs1 of pulsing.
In addition, even if this pulsation Vcs1 sometimes also can not decay and remain in Cs bus 43c after thin film transistor (TFT) 47 ends.Even if when Vcs1 of pulsing also can not decay and remain in Cs bus 43c after thin film transistor (TFT) 47 ends, sometimes affect the voltage applied the capacitor Clc of operation liquid crystal layer 13, described liquid crystal layer 13 is the liquid crystal layers of the multiple pixel A be connected with this Cs bus 43c.But in above-mentioned liquid crystal panel 10, Cs bus 43c is connected with other Cs bus 43c by a distribution 310.Therefore, the pulsation Vcs1 produced in Cs bus 43c is distributed to other Cs bus 43c by a distribution 310, decays in advance.Reduce thus and result from pulsation Vcs1 and the confusion of image that produces.Like this, liquid crystal panel 10, by arranging a distribution 310, can reduce resulting from pulsation Vcs1 and the confusion of image that produces.
Be described above the liquid crystal indicator of one embodiment of the present invention, but the invention is not restricted to above-mentioned embodiment, can various change be carried out.
Such as, the concrete formation of liquid crystal indicator is not limited to above-mentioned embodiment.Particularly the collocation method, method of attachment etc. of Cs bus 43c (auxiliary capacity wiring), dry distribution, a distribution, horizontal dry distribution can carry out various change.In addition, in the above-described embodiment, 1 pixel A has RGB sub-pixel A r, A g, A b, each sub-pixel A r, A g, A balso possess upper and lower secondary pixel Pa, Pb.Further, upper and lower secondary pixel Pa, Pb is driven individually.Like this, in the above-described embodiment, the liquid crystal panel of many pixel drivers type is illustrated.The structure of liquid crystal panel is not particularly limited in the liquid crystal panel of many pixel drivers type.In addition, the concrete formation of liquid crystal indicator illustrate with liquid crystal panel immediately below be relatively configured with the structure of backlight, but also can be the liquid crystal indicator of so-called marginal ray mode.In addition, liquid crystal panel of the present invention also can be used as the liquid crystal panel of liquid crystal projection apparatus etc.
description of reference numerals
10 liquid crystal panels
10a pixel region
11 colored filter substrates
12 array base paltes
13 liquid crystal layers
15 encapsulants
17,18 Polarizers
20 backlights
22 light sources
24 backlight chassis
26 optical sheets
30 housings
32 frameworks
42 pixel electrodes
42a, 42b (secondary pixel) pixel electrode
43a source bus line
43b grid bus
43c Cs bus (auxiliary capacity wiring)
46 alignment films
47,47a, 47b thin film transistor (TFT)
52 black matrixes
53 colored filters
55 comparative electrodes
59 septs
71 source electrode drivers
72 gate drivers
100 liquid crystal indicators
121 source electrodes
122 gate electrodes
123a, 123b drain electrode
142a, 142b auxiliary capacitance electrode
144a, 144b wiring lead
180 dry distribution groups
181 ~ 184 dry distributions
190 control signal supply units
200 control parts
201 signal input parts
202 timing control parts
203 power supplys
310 distributions
320 horizontal dry distributions
A pixel
A r, A g, A bsub-pixel
The control signal of c auxiliary capacitor
Clc operates the capacitor of liquid crystal layer
Cs auxiliary capacitor
E electric charge
The secondary pixel of Pa, Pb
SG sweep signal
Vcs1 is pulsed

Claims (18)

1. a liquid crystal panel, wherein, multiple pixel is configured to have the rectangular of row and column,
The feature of above-mentioned liquid crystal panel is to possess:
The auxiliary capacitor arranged in above-mentioned each pixel;
Be configured in the multiple auxiliary capacity wirings be connected on above-mentioned line direction, with each auxiliary capacitor be configured on this line direction;
Multiple distributions are in a column direction configured in the pixel region being configured with above-mentioned multiple pixel; And
The control signal supply unit being connected with above-mentioned distribution, by above-mentioned auxiliary capacity wiring, above-mentioned auxiliary capacitor being transmitted control signal from above-mentioned distribution,
Also possess the horizontal dry distribution of the edge part being configured in above-mentioned column direction,
Above-mentioned distribution is connected with above-mentioned horizontal dry distribution.
2. liquid crystal panel according to claim 1,
Possess at least one party's edge part being configured in above-mentioned line direction, the dry distribution be connected with above-mentioned auxiliary capacity wiring,
Above-mentioned dry distribution is connected with above-mentioned control signal supply unit, is transmitted control signal from above-mentioned dry distribution by above-mentioned auxiliary capacity wiring to above-mentioned auxiliary capacitor.
3. liquid crystal panel according to claim 1,
Above-mentioned multiple distributions are divided into multiple groups, are connected with above-mentioned control signal supply unit in the mode distribution belonging to identical group being sent to identical control signal,
Above-mentioned multiple auxiliary capacity wiring respectively with belong to 1 distribution organized and be connected.
4. liquid crystal panel according to claim 3,
Possess the multiple dry distribution of at least one party's edge part being configured in above-mentioned line direction,
Above-mentioned auxiliary capacity wiring is connected with 1 dry distribution in above-mentioned multiple dry distribution,
By above-mentioned control signal supply unit, the control signal identical with propping up of organizing 1 that belongs to that this auxiliary capacity wiring the connects control signal that distribution sends is sent to this dry distribution.
5. the liquid crystal panel according to any one in Claims 1-4,
Above-mentioned each pixel is similarly configured with a distribution respectively.
6. the liquid crystal panel according to any one in Claims 1-4,
Above-mentioned each pixel possesses RGB sub-pixel respectively, and above-mentioned distribution is to configure by the mode of the R sub-pixel in above-mentioned RGB sub-pixel.
7. the liquid crystal panel according to any one in Claims 1-4,
Above-mentioned each pixel possesses RGB sub-pixel respectively, and above-mentioned distribution is to configure by the mode of the G sub-pixel in above-mentioned RGB sub-pixel.
8. the liquid crystal panel according to any one in Claims 1-4,
Above-mentioned each pixel possesses RGB sub-pixel respectively, and above-mentioned distribution is to configure by the mode of the B sub-pixel in above-mentioned RGB sub-pixel.
9. the liquid crystal panel according to any one in Claims 1-4,
Above-mentioned liquid crystal panel possesses:
Liquid crystal layer;
Clip a pair substrate of above-mentioned liquid crystal layer;
The comparative electrode that side's substrate in above-mentioned a pair substrate is formed; And
Pixel electrode that is relative with above-mentioned comparative electrode, that formed on the opposing party's substrate,
Configure 2 distributions in the mode in the region by being formed with pixel electrodes, above-mentioned 2 distributions are supplied to the direction pair of control signal that variable quantity is identical on the contrary mutually of signal voltage change.
10. the liquid crystal panel according to any one in Claims 1-4,
Above-mentioned liquid crystal panel possesses:
Liquid crystal layer;
Clip a pair substrate of above-mentioned liquid crystal layer;
The comparative electrode that side's substrate in above-mentioned a pair substrate is formed; And
Pixel electrode that is relative with above-mentioned comparative electrode, that formed on the opposing party's substrate,
Multiple distributions are configured with in the mode in the region of the pixel electrode by being formed with above-mentioned pixel,
Equal at above-mentioned the electric capacity formed between distribution and pixel electrode.
11. liquid crystal panels according to any one in Claims 1-4,
Above-mentioned liquid crystal panel possesses:
Liquid crystal layer;
Clip a pair substrate of above-mentioned liquid crystal layer;
The comparative electrode that side's substrate in above-mentioned a pair substrate is formed; And
Pixel electrode that is relative with above-mentioned comparative electrode, that formed on the opposing party's substrate,
Multiple distributions are configured with in the mode in the region of the pixel electrode by being formed with above-mentioned pixel,
At less than 2 times that the maximal value of above-mentioned each the multiple electric capacity formed between distribution and pixel electrode is minimum value.
12. liquid crystal panels according to any one in Claims 1-4,
Above-mentioned liquid crystal panel possesses:
Liquid crystal layer;
Clip a pair substrate of above-mentioned liquid crystal layer;
The comparative electrode that side's substrate in above-mentioned a pair substrate is formed; And
Pixel electrode that is relative with above-mentioned comparative electrode, that formed on the opposing party's substrate,
Multiple distributions are configured with in the mode in the region of the pixel electrode by being formed with above-mentioned pixel,
Above-mentioned each distribution is equal with the projected area of pixel electrode overlap.
13. liquid crystal panels according to any one in Claims 1-4,
Above-mentioned liquid crystal panel possesses:
Liquid crystal layer;
Clip a pair substrate of above-mentioned liquid crystal layer;
The comparative electrode that side's substrate in above-mentioned a pair substrate is formed; And
Pixel electrode that is relative with above-mentioned comparative electrode, that formed on the opposing party's substrate,
Multiple distributions are configured with in the mode in the region of the pixel electrode by being formed with above-mentioned pixel,
The maximal value of the projected area that above-mentioned each distribution is overlapping with pixel electrode is less than 2 times of minimum value.
14. liquid crystal panels according to any one in Claims 1-4,
Above-mentioned liquid crystal panel possesses:
Liquid crystal layer;
Clip a pair substrate of above-mentioned liquid crystal layer;
The comparative electrode that side's substrate in above-mentioned a pair substrate is formed; And
Pixel electrode that is relative with above-mentioned comparative electrode, that formed on the opposing party's substrate,
Above-mentioned distribution configures in the mode in the region of the pixel electrode by being formed with above-mentioned pixel,
The electric capacity formed by above-mentioned comparative electrode and pixel electrode is being set to Clc,
The electric capacity of above-mentioned auxiliary capacitor is set to Cs,
The electric capacity formed between distribution and pixel electrode at above-mentioned is set to Cx,
Form as follows: Cx/ (Clc+Cs+Cx)≤0.2.
15. liquid crystal panels according to any one in Claims 1-4,
Above-mentioned liquid crystal panel possesses:
Liquid crystal layer;
Clip a pair substrate of above-mentioned liquid crystal layer;
The comparative electrode that side's substrate in above-mentioned a pair substrate is formed; And
Pixel electrode that is relative with above-mentioned comparative electrode, that formed on the opposing party's substrate,
Gap is formed with, to be configured with a distribution by the mode in this gap between pixel electrodes.
16. liquid crystal panels according to any one in Claims 1-4,
Each pixel has the different secondary pixel of luminance level,
The secondary pixel that this luminance level is different possesses the auxiliary capacitor connected from different auxiliary capacity wirings respectively,
By the direction pair of control signal that mutually on the contrary variable quantity identical of above-mentioned different auxiliary capacity wiring to the auxiliary capacitor signal voltage transmission change arranged in the secondary pixel that above-mentioned luminance level is different.
17. 1 kinds of liquid crystal indicators, is characterized in that, possess the liquid crystal panel described in any one in claim 1 to 16.
18. 1 kinds of LCD TV, is characterized in that, possess liquid crystal indicator according to claim 17.
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